With Ascot around the corner, royal expert Richard Fitzwilliams told MailOnline: ''Lowness in a curtsey is a sign of nervousness and should be avoided.'
Two of the most important figures in the British Royal Family were born commoners. But both Catherine and Sophie went on to win the affection of the public, the monarchy and the late Queen.
The Princess of Wales and Duchess of Edinburgh's bond extends to their fashion choices, with the two often wearing the same colours on separate occasions.
The festive period is a busy time for many people, yet Sophie the Duchess of Edinburgh has been hard at work and attended several engagements in recent weeks.